Dear @PowerAddict
Based on your and others wonderful support I made the following,
- Collection to find sales by location
- Collection to summarize the sales by location
- Chart to show the summary sales by location

I want the location chart to filter based on the Year selection in the dropdown. In the location summary the SalesYear column has under the group. I tried following way but did not work
If(Dropdown2_1.Selected.Value="All",SalesSumbyLocation,Filter(SalesSumbyLocation, Grouped.SalesYear = Text(Dropdown2_1.Selected.Value)))
It says under the = sign invalid argument type
Kindly help
Osmand